Go语言搜索某个大文件中是否包含特定字符串
package main
import (
"time"
"os"
"bufio"
"strconv"
"log"
"bytes"
)
var totalSize float64
func trace(msg string) func(){
start := time.Now()
log.Printf("%s", msg)
return func() {
elapse := time.Since(start)
log.Printf("exit %s (%s) %.2fMB/s", msg, elapse, totalSize / elapse.Seconds())
}
}
func CheckFileContainsStr(path,str string) {
cmp:=[]byte(str)
log.Println(cmp)
defer trace("file parser using golang")()
f, err := os.Open(path)
if err != nil {
log.Printf("open file failed, %s", err)
}
defer f.Close()
input := bufio.NewScanner(f)
for input.Scan() {
//log.Println(input.Bytes())
info:=input.Bytes()
if bytes.Contains(info,cmp){
log.Println(info)
}
tokens := bytes.SplitN(input.Bytes(), []byte(" "), 10)
//log.Println(tokens)
totalSize += float64(len(input.Bytes()))
if len(tokens) < 9 {
continue
}
strconv.ParseInt(string(tokens[8]), 10, 0)
}
totalSize = totalSize / (1 << 20)
}
func main(){
CheckFileContainsStr("～/Downloads/manager.jsp","JspSpyPwd")
}